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Finding the Fourth Proportional to 217,962, 325,035.62 and 215,969

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Solution

The fourth proportional to 217,962, 325,035.62 and 215,969 is: 322,063.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,962 : 325,035.62 = 215,969 : x
  2. Step 2: Convert to fraction form
    217,962/325,035.62 = 215,969/x
  3. Step 3: Cross multiply
    217,962x = 325,035.62 × 215,969
  4. Step 4: Simplify right side
    217,962x = 70,197,617,815.78
  5. Step 5: Solve for x
    x = 70,197,617,815.78/217,962
  6. Step 6: Final answer
    x = 322,063.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.